 |
 | Home | Contact Us | FAQ | Search & Site Map | Link to Us |
 | Sign In | Join | Other 45 Sites in Network |
Car Forum / Land Rover Cars / May 2008dual battery set-up
I'm confused. There seems different types of dual battery isolators available. Electronic, diode etc. Some only work with external sensed alternators. What does all this mean? I have a TD5 Discovery 2 and a second 100ah deep cycle battery. I would like to hook this second battery up to the alternator for charging when the vehicle is running and automatically switch to the 20 watt solar panel when stationery. I have a solar panel controller. Ideally, I would want the isolator to charge the main battery as a priority before charging the auxillery and prevent drain between the two batteries and then the solar charger to take over but only charge the auxillery when the motor is not running. If this all makes sense, anybody know a good place to start. Steve W (in Aus) > I'm confused. There seems different types of dual battery isolators > available. Electronic, diode etc. Some only work with external sensed [quoted text clipped - 8 lines] > auxillery when the motor is not running. If this all makes sense, > anybody know a good place to start. Best Option: Fit a 2nd alternator Next best: Diode type charge splitter with externally sensed alternator picking up charge voltage from battery +ve terminal. Less good: Automatic changeover relay. >> I'm confused. There seems different types of dual battery >> isolators available. Electronic, diode etc. Some only work with [quoted text clipped - 15 lines] > > Less good: Automatic changeover relay. Seems NZ is as good as any if not better than most!  SignatureWisdom and experience come with age, they say, but I wish I could remember the darn question NZ hmm then why is there such an influx to Oz..coz it is too bloody cold. Onto the matter at hand a constant duty rated solenoid is pretty easy (what I use..I have a jumper cable as a spare just in case ;-) ) Cheers, Greg > >> I'm confused. There seems different types of dual battery > >> isolators available. Electronic, diode etc. Some only work with [quoted text clipped - 23 lines] > > - Show quoted text - > I'm confused. There seems different types of dual battery isolators > available. Electronic, diode etc. Some only work with external sensed [quoted text clipped - 9 lines] > anybody know a good place to start. > Steve W (in Aus) Well, I wouldn't start in Australia! SignatureWisdom and experience come with age, they say, but I wish I could remember the darn question > I'm confused. There seems different types of dual battery isolators > available. Electronic, diode etc. Some only work with external sensed [quoted text clipped - 9 lines] > know a good place to start. > Steve W (in Aus) YGM just a starting point Derek > I'm confused. There seems different types of dual battery isolators >available. Electronic, diode etc. Some only work with external sensed [quoted text clipped - 9 lines] >anybody know a good place to start. >Steve W (in Aus) Charging wise what you want is pretty standard arrangement from a motorcaravan. Alternator will quite happily charge both batteries simultaneously A couple of voltage sensitive relays will do it, fed from output of alternator 1st one to connect/disconnect aux battery to alternator for charging. and one to switch aux battery to solar panel. What do you use the aux battery for and when? Signaturehugh Reply to address is valid at the time of posting >> I'm confused. There seems different types of dual battery isolators >>available. Electronic, diode etc. Some only work with external sensed [quoted text clipped - 21 lines] > >What do you use the aux battery for and when? I'll second the voltage sensitive relay method. Dead easy to fit! Basically a small electronic unit connected to measure the voltage across the primary battery. When that voltage reaches about 13.8v, the unit switches a relay to connected so as to parallel the second battery across the first by switching a +ve feed. The unit disconnects the secondary battery when the primary battery voltage falls below about 12.8v. You don't really need a second one, if the solar panel already has a controller, as secondary battery voltage is prevented from feeding back into the solar already! Neil (Reply via NG please) > I'll second the voltage sensitive relay method. Dead easy to fit! > Basically a small electronic unit connected to measure the voltage [quoted text clipped - 11 lines] > > (Reply via NG please) Thanks all for the replies. I ended with a Northstar (usa) 100ah AGM battery that fits neatly in the side bin in the back of the disco along with a 2000w inverter. That runs to 100ah circuit breaker and then a voltage sensing solenoid isolator mounted under the bonnet (mounted along side the brake booster). Looking in the back of the car, you would not know the system is installed as it's all hidden in the side bin. Runs fridges etc. and, although not in Adelaide YET - angle grinders for wheel clamps! The battery is similar to this only it's 100ah http://www.globalexcess.biz/images/NSB170F.jpg The isolator is locally made in my city http://www.redarc.com.au/smart-start.htm Steve W (in Aus) People Hi, a good friend who owns a Discovery 3 TDV6 and has recently fitted a dual battery and the respective charging system. The dual battery charging system he fitted came from this source www.traxide.com.at Up to now he is extremely satisfied both with the performance of the kit (batteries are charged as promised) and mainly by the quality of the kit and the fact that EVERYTHING was included for its proper installation on his LR3. They also sell Anderson plugs at a very good price for batches of ten units so this may be a good idea for a group purchase (hint.....) Take care Pantelis Hope this helps > > I'll second the voltage sensitive relay method. Dead easy to fit! > > Basically a small electronic unit connected to measure the voltage [quoted text clipped - 26 lines] > http://www.redarc.com.au/smart-start.htm > Steve W (in Aus) > People Hi, > [quoted text clipped - 52 lines] > > - Show quoted text - Very interesting site, but t works better as www.traxide.com.au Now what I need is a way of charging my batteries when they are set up as a 12v AND a 24v supply! Cheers Peter Peter and all please excuse me for the typing mistake. Mea culpa !!!! I think they also offer a 12 AND 24 v supply arrangement. Take care Pantelis On 8 May, 10:20, "Pantelis Giamarellos" <pa...@otenet.gr> wrote: > People Hi, > [quoted text clipped - 56 lines] > > - Show quoted text - Very interesting site, but t works better as www.traxide.com.au Now what I need is a way of charging my batteries when they are set up as a 12v AND a 24v supply! Cheers Peter > I'm confused. There seems different types of dual battery isolators > available. Electronic, diode etc. Some only work with external sensed [quoted text clipped - 9 lines] > know a good place to start. > Steve W (in Aus) Visit a campervan store and see if they can supply a Zig Controller or the like, they automatically control the charging of the vehicle battery and the leisure battery - vehicle battery has to reach a high % charged status, then will charge the leisure battery from the alternator. Most can sense when 240V has been connected and will recharge the leisure battery, usually they wont recharge the vehicle battery unless there is an isolator relay for the alternator. The newer models also have the solar input and will top up the batteries. Its not new technology, I have a Zig unit on a Merc Campervan from the mid 1980s.
|
Reply to this Message |
 Sign In
 Join
 My Latest Posts My Monitored Threads My Blog My Photo Gallery My Profile My Homepage Start New Thread Enable EMail Alerts Rate this Thread
|
©2008 Advenet LLC Privacy Policy - Terms of Use
This website includes both content owned or controlled by Advenet as well as content owned or controlled by third parties.